1k7c
From Proteopedia
Rhamnogalacturonan acetylesterase with seven N-linked carbohydrate residues distributed at two N-glycosylation sites refined at 1.12 A resolution
Structural highlights
FunctionRHA1_ASPAC Plays a key role in the degradation of rhamnogalacturonan in the cell wall. Acts in synergy together with rhamnogalacturonase A (RGase A) and rhamnogalacturonase B (RGase B).[1] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe crystal structure of the glycoprotein rhamnogalacturonan acetylesterase from Aspergillus aculeatus has been refined to a resolution of 1.12 A using synchrotron data collected at 263 K. Both of the two putative N-glycosylation sites at Asn104 and Asn182 are glycosylated and, owing to crystal contacts, the glycan structure at Asn182 is exceptionally well defined in the electron-density maps, showing the six-carbohydrate structure Manalpha1-6(Manalpha1-3)Manalpha1-6Manbeta1-4GlcNAcbeta1-4GlcNAcbeta-Asn18 2. Equivalent carbohydrate residues were restrained to have similar geometries, but were refined without target values. The refined bond lengths and angles were compared with the values obtained from small-molecule studies that form the basis for the dictionaries used for glycoprotein refinement. A branched N-linked glycan at atomic resolution in the 1.12 A structure of rhamnogalacturonan acetylesterase.,Molgaard A, Larsen S Acta Crystallogr D Biol Crystallogr. 2002 Jan;58(Pt 1):111-9. Epub 2001, Dec 21. PMID:11752785[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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